Question

What is the distance of an object from a convex lens to form an magnified asbestos image of an object? ​

Answer 1

Explanation:

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12th

Physics

Ray Optics and Optical Instruments

Spherical Mirrors

The image of an object form...

PHYSICS

The image of an object formed by a convex lens is of the same size as the object. If the image is formed at a distance 50 cm from the lens at what distance from the lens is the object placed? Find the focal length and power of the used.

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ANSWER

Same size of image is formed by a convex lens only when the object is placed at a distance u=2f from the optical center and image is also formed at distance 2f on other side of lens.

⟹2f=50

⟹f=25cm

P=

f(m)

1

=

0.25

1

⟹P=+4D

Answer 2

Same size of image is formed by a convex lens only when the object is placed at a distance u=2f from the optical center and image is also formed at distance 2f on other side of lens.

⟹2f=50

⟹f=25cm

P=

f(m)

1

=

0.25

1

⟹P=+4D